505604986 has 16 divisors (see below), whose sum is σ = 764469288. Its totient is φ = 250790400.

The previous prime is 505604959. The next prime is 505604993. The reversal of 505604986 is 689406505.

It can be written as a sum of positive squares in 4 ways, for example, as 494840025 + 10764961 = 22245^2 + 3281^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133576 + ... + 137308.

Almost surely, 2^505604986 is an apocalyptic number.

505604986 is a deficient number, since it is larger than the sum of its proper divisors (258864302).

505604986 is a wasteful number, since it uses less digits than its factorization.

505604986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4257.

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 505604986 is about 22485.6617870144. The cubic root of 505604986 is about 796.6552992509.

The spelling of 505604986 in words is "five hundred five million, six hundred four thousand, nine hundred eighty-six".